pvr: Re-designed OSDs for channel,guide and guideinfo

This PR adds re-designed OSDs for channel, guide and guideinfo with extended information.
It can be enabled/disabled with a new skin setting found under LiveTV tab.

Channels OSD
![screenshot003](https://f.cloud.github.com/assets/1878991/565665/f5929d04-c62b-11e2-9ea0-35b146276a7b.png)

Guide/EPG OSD
![screenshot000](https://f.cloud.github.com/assets/1878991/565668/523cfe1e-c62c-11e2-97ab-e8089b37fbf6.png)

GuideInfo OSD (calls record/add time command)
![screenshot000](https://f.cloud.github.com/assets/1878991/565257/29722d4e-c5f8-11e2-84c3-dd7bb81a8f5b.png)

Skin Setting
![screenshot003](https://f.cloud.github.com/assets/1878991/564406/09ddbfa8-c561-11e2-8c9b-b2cbeae5bcae.png)